Phoebe looked at everyone as she started dropping things on the ground.
"I need some silence to cast a small spell."
She got a moon crystal, some sage and a drop of water from the lake of life. Then, she sprinkled the water on the moon crystal and lit the sage. She held up the moon crystal and everyone's eyes followed, looking up curiously.
"I call upon the ancient magic, open the heavens, reveal the magic that is hidden here."
The crystal started to glow, just like a bright moon it cast a soft light around them. Phoebe smiled, the spell had worked on her first try.
"Please, give this to Yin and the ghosts." she told the ancestor.
It vanished away and returned in less than ten seconds, giving the others no opportunity to question Phoebe about what she was up to.